/*
   this is from zlib-1.2.7/contrib/minizip/

   ioapi.h -- IO base function header for compress/uncompress .zip
   part of the MiniZip project - ( http://www.winimage.com/zLibDll/minizip.html )

         Copyright (C) 1998-2010 Gilles Vollant (minizip) ( http://www.winimage.com/zLibDll/minizip.html )

         Modifications for Zip64 support
         Copyright (C) 2009-2010 Mathias Svensson ( http://result42.com )

         For more info read MiniZip_info.txt

         Changes

    Oct-2009 - Defined ZPOS64_T to fpos_t on windows and u_int64_t on linux. (might need to find a better why for this)
    Oct-2009 - Change to fseeko64, ftello64 and fopen64 so large files would work on linux.
               More if/def section may be needed to support other platforms
    Oct-2009 - Defined fxxxx64 calls to normal fopen/ftell/fseek so they would compile on windows.
                          (but you should use iowin32.c for windows instead)

*/

#ifndef _ZLIBIOAPI64_H
#define _ZLIBIOAPI64_H

#if (!defined(_WIN32)) && (!defined(WIN32)) && (!defined(__APPLE__))

	// Linux needs this to support file operation on files larger then 4+GB
	// But might need better if/def to select just the platforms that needs them.

	#ifndef __USE_FILE_OFFSET64
		#define __USE_FILE_OFFSET64
	#endif
	#ifndef __USE_LARGEFILE64
		#define __USE_LARGEFILE64
	#endif
	#ifndef _LARGEFILE64_SOURCE
		#define _LARGEFILE64_SOURCE
	#endif
	#ifndef _FILE_OFFSET_BIT
		#define _FILE_OFFSET_BIT 64
	#endif

#endif

#include <stdio.h>
#include <stdlib.h>
#include <zlib.h>

#if defined(USE_FILE32API)
	#define fopen64 fopen
	#define ftello64 ftell
	#define fseeko64 fseek
#else
	#ifdef __FreeBSD__
		#define fopen64 fopen
		#define ftello64 ftello
		#define fseeko64 fseeko
	#endif
	#ifdef _MSC_VER
		#define fopen64 fopen
		#if (_MSC_VER >= 1400) && (!(defined(NO_MSCVER_FILE64_FUNC)))
			#define ftello64 _ftelli64
			#define fseeko64 _fseeki64
		#else // old MSC
			#define ftello64 ftell
			#define fseeko64 fseek
		#endif
	#endif
#endif

/*
#ifndef ZPOS64_T
  #ifdef _WIN32
                #define ZPOS64_T fpos_t
  #else
    #include <stdint.h>
    #define ZPOS64_T uint64_t
  #endif
#endif
*/

#ifdef HAVE_MINIZIP64_CONF_H
	#include "mz64conf.h"
#endif

/* a type choosen by DEFINE */
#ifdef HAVE_64BIT_INT_CUSTOM
	typedef  64BIT_INT_CUSTOM_TYPE ZPOS64_T;
#else
	#ifdef HAS_STDINT_H
		#include "stdint.h"
		typedef uint64_t ZPOS64_T;
	#else

		/* Maximum unsigned 32-bit value used as placeholder for zip64 */
		#define MAXU32 0xffffffff

		#if defined(_MSC_VER) || defined(__BORLANDC__)
			typedef unsigned __int64 ZPOS64_T;
		#else
			typedef unsigned long long int ZPOS64_T;
		#endif
	#endif
#endif



#ifdef __cplusplus
extern "C" {
#endif


#define ZLIB_FILEFUNC_SEEK_CUR (1)
#define ZLIB_FILEFUNC_SEEK_END (2)
#define ZLIB_FILEFUNC_SEEK_SET (0)

#define ZLIB_FILEFUNC_MODE_READ      (1)
#define ZLIB_FILEFUNC_MODE_WRITE     (2)
#define ZLIB_FILEFUNC_MODE_READWRITEFILTER (3)

#define ZLIB_FILEFUNC_MODE_EXISTING (4)
#define ZLIB_FILEFUNC_MODE_CREATE   (8)


#ifndef ZCALLBACK
#if (defined(WIN32) || defined(_WIN32) || defined (WINDOWS) || defined (_WINDOWS)) && defined(CALLBACK) && defined (USEWINDOWS_CALLBACK)
#define ZCALLBACK CALLBACK
#else
#define ZCALLBACK
#endif
#endif




typedef voidpf( ZCALLBACK* open_file_func )      OF( ( voidpf opaque, const char* filename, int mode ) );
typedef uLong( ZCALLBACK* read_file_func )      OF( ( voidpf opaque, voidpf stream, void* buf, uLong size ) );
typedef uLong( ZCALLBACK* write_file_func )     OF( ( voidpf opaque, voidpf stream, const void* buf, uLong size ) );
typedef int ( ZCALLBACK* close_file_func )     OF( ( voidpf opaque, voidpf stream ) );
typedef int ( ZCALLBACK* testerror_file_func ) OF( ( voidpf opaque, voidpf stream ) );

typedef long ( ZCALLBACK* tell_file_func )      OF( ( voidpf opaque, voidpf stream ) );
typedef long ( ZCALLBACK* seek_file_func )      OF( ( voidpf opaque, voidpf stream, uLong offset, int origin ) );


/* here is the "old" 32 bits structure structure */
typedef struct zlib_filefunc_def_s
{
	open_file_func      zopen_file;
	read_file_func      zread_file;
	write_file_func     zwrite_file;
	tell_file_func      ztell_file;
	seek_file_func      zseek_file;
	close_file_func     zclose_file;
	testerror_file_func zerror_file;
	voidpf              opaque;
} zlib_filefunc_def;

typedef ZPOS64_T( ZCALLBACK* tell64_file_func )    OF( ( voidpf opaque, voidpf stream ) );
typedef long ( ZCALLBACK* seek64_file_func )    OF( ( voidpf opaque, voidpf stream, ZPOS64_T offset, int origin ) );
typedef voidpf( ZCALLBACK* open64_file_func )    OF( ( voidpf opaque, const void* filename, int mode ) );

typedef struct zlib_filefunc64_def_s
{
	open64_file_func    zopen64_file;
	read_file_func      zread_file;
	write_file_func     zwrite_file;
	tell64_file_func    ztell64_file;
	seek64_file_func    zseek64_file;
	close_file_func     zclose_file;
	testerror_file_func zerror_file;
	voidpf              opaque;
} zlib_filefunc64_def;

void fill_fopen64_filefunc OF( ( zlib_filefunc64_def* pzlib_filefunc_def ) );
void fill_fopen_filefunc OF( ( zlib_filefunc_def* pzlib_filefunc_def ) );

/* now internal definition, only for zip.c and unzip.h */
typedef struct zlib_filefunc64_32_def_s
{
	zlib_filefunc64_def zfile_func64;
	open_file_func      zopen32_file;
	tell_file_func      ztell32_file;
	seek_file_func      zseek32_file;
} zlib_filefunc64_32_def;


#define ZREAD64(filefunc,filestream,buf,size)     ((*((filefunc).zfile_func64.zread_file))   ((filefunc).zfile_func64.opaque,filestream,buf,size))
#define ZWRITE64(filefunc,filestream,buf,size)    ((*((filefunc).zfile_func64.zwrite_file))  ((filefunc).zfile_func64.opaque,filestream,buf,size))
//#define ZTELL64(filefunc,filestream)            ((*((filefunc).ztell64_file)) ((filefunc).opaque,filestream))
//#define ZSEEK64(filefunc,filestream,pos,mode)   ((*((filefunc).zseek64_file)) ((filefunc).opaque,filestream,pos,mode))
#define ZCLOSE64(filefunc,filestream)             ((*((filefunc).zfile_func64.zclose_file))  ((filefunc).zfile_func64.opaque,filestream))
#define ZERROR64(filefunc,filestream)             ((*((filefunc).zfile_func64.zerror_file))  ((filefunc).zfile_func64.opaque,filestream))

voidpf call_zopen64 OF( ( const zlib_filefunc64_32_def* pfilefunc, const void* filename, int mode ) );
long    call_zseek64 OF( ( const zlib_filefunc64_32_def* pfilefunc, voidpf filestream, ZPOS64_T offset, int origin ) );
ZPOS64_T call_ztell64 OF( ( const zlib_filefunc64_32_def* pfilefunc, voidpf filestream ) );

void    fill_zlib_filefunc64_32_def_from_filefunc32( zlib_filefunc64_32_def* p_filefunc64_32, const zlib_filefunc_def* p_filefunc32 );

#define ZOPEN64(filefunc,filename,mode)         (call_zopen64((&(filefunc)),(filename),(mode)))
#define ZTELL64(filefunc,filestream)            (call_ztell64((&(filefunc)),(filestream)))
#define ZSEEK64(filefunc,filestream,pos,mode)   (call_zseek64((&(filefunc)),(filestream),(pos),(mode)))

#ifdef __cplusplus
}
#endif

#endif
